Could any waist trainer work for postpartum belly?

Just looking around and I saw this belly wrap for after pregnancy. It looks just like a wrap I have that’s not designated for pregnancy but very similar design and function. The postnatal one costs $70!!

I’m thinking about getting one (a different brand) but am wondering if I could just use the one I already have? Are the postnatal ones extremely different/special? Or do I even need one at all, is it effective?

Thanks !!